is 2 87729757 - 1
has 26409289 decimal digits
takes 295.763 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual276174.444764.4737 %7100007100003.47071.4543 %177.915564.9904 %
Target27587.221464.0000 %60000010000000029.40654.0445 %116.627865.4560 %
Difference+1+87.2234+0.4737 %+110000-99290000-25.9357-2.5901 %+61.2877-0.4657 %

Known prime factors (1 factor, 80.5 bits, 0.00009178% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
8772975717305044025338687732475912580.5179862699166793935
5 × 7 × 11 × 3323 × 59183 × 130259
2018-05-16591831302592,791.10.30820.5888

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2018-05-16MarkSlaptop6471000071000012580.5173.4711.632%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-11-19Architects Cubedm1_502642650.043
2013-03-06ANONYMOUSSrvrUID2652660.085
2013-11-02AxelssonManual testing2662670.170
2014-03-24albin_pouillesprod-22672680.341
2014-03-26albin_pouillesprod-22682690.681
2014-03-29albin_pouillesprod-22692701.363
2014-09-09Preben SManual testing2702712.726
2017-06-24GregManual testing2712725.451
2017-06-24GregManual testing27227310.90
2017-06-29gcardonaManual testing27327421.81
2018-05-08Strolling JellyfishManual testing27427543.61
2018-05-08Strolling JellyfishManual testing27527687.22


ECM factoring results:
No ECM results for M87729757


Lucas-Lehmer results:
No L-L results for M87729757


PRP results:
No PRP results for M87729757


CERT results:
No CERT results for M87729757


P-1 factor-bounds graph:
B1 = 710000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
276
275
274
273
272
271
270
269
268
267
266
265
this exponent TF target: 75
TF double-checked to: 67
250
260
270
280
290
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Last modified: 2024-03-03T02:29:32+00:00